Finding the Fourth Proportional to 111,786.48, 154,298.16 and 66,496.32

Step by Step Solution

1. Step 1: Write the proportion equation
   111,786.48 : 154,298.16 = 66,496.32 : x
2. Step 2: Convert to fraction form
   111,786.48/154,298.16 = 66,496.32/x
3. Step 3: Cross multiply
   111,786.48x = 154,298.16 × 66,496.32
4. Step 4: Simplify right side
   111,786.48x = 10,260,259,822.77
5. Step 5: Solve for x
   x = 10,260,259,822.77/111,786.48
6. Step 6: Final answer
   x = 91,784.44